1 #ifndef _LINUX_MODULE_H
2 #define _LINUX_MODULE_H
4 * Dynamic loading of modules into the kernel.
7 * Rewritten again by Rusty Russell, 2002
9 #include <linux/list.h>
10 #include <linux/stat.h>
11 #include <linux/compiler.h>
12 #include <linux/cache.h>
13 #include <linux/kmod.h>
14 #include <linux/init.h>
15 #include <linux/elf.h>
16 #include <linux/stringify.h>
17 #include <linux/kobject.h>
18 #include <linux/moduleparam.h>
19 #include <linux/jump_label.h>
20 #include <linux/export.h>
21 #include <linux/rbtree_latch.h>
22 #include <linux/error-injection.h>
23 #include <linux/tracepoint-defs.h>
25 #include <linux/percpu.h>
26 #include <asm/module.h>
28 /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
29 #define MODULE_SIG_STRING "~Module signature appended~\n"
31 /* Not Yet Implemented */
32 #define MODULE_SUPPORTED_DEVICE(name)
34 #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
36 struct modversion_info {
38 char name[MODULE_NAME_LEN];
42 struct exception_table_entry;
44 struct module_kobject {
47 struct kobject *drivers_dir;
48 struct module_param_attrs *mp;
49 struct completion *kobj_completion;
52 struct module_attribute {
53 struct attribute attr;
54 ssize_t (*show)(struct module_attribute *, struct module_kobject *,
56 ssize_t (*store)(struct module_attribute *, struct module_kobject *,
57 const char *, size_t count);
58 void (*setup)(struct module *, const char *);
59 int (*test)(struct module *);
60 void (*free)(struct module *);
63 struct module_version_attribute {
64 struct module_attribute mattr;
65 const char *module_name;
67 } __attribute__ ((__aligned__(sizeof(void *))));
69 extern ssize_t __modver_version_show(struct module_attribute *,
70 struct module_kobject *, char *);
72 extern struct module_attribute module_uevent;
74 /* These are either module local, or the kernel's dummy ones. */
75 extern int init_module(void);
76 extern void cleanup_module(void);
80 * module_init() - driver initialization entry point
81 * @x: function to be run at kernel boot time or module insertion
83 * module_init() will either be called during do_initcalls() (if
84 * builtin) or at module insertion time (if a module). There can only
87 #define module_init(x) __initcall(x);
90 * module_exit() - driver exit entry point
91 * @x: function to be run when driver is removed
93 * module_exit() will wrap the driver clean-up code
94 * with cleanup_module() when used with rmmod when
95 * the driver is a module. If the driver is statically
96 * compiled into the kernel, module_exit() has no effect.
97 * There can only be one per module.
99 #define module_exit(x) __exitcall(x);
104 * In most cases loadable modules do not need custom
105 * initcall levels. There are still some valid cases where
106 * a driver may be needed early if built in, and does not
107 * matter when built as a loadable module. Like bus
108 * snooping debug drivers.
110 #define early_initcall(fn) module_init(fn)
111 #define core_initcall(fn) module_init(fn)
112 #define core_initcall_sync(fn) module_init(fn)
113 #define postcore_initcall(fn) module_init(fn)
114 #define postcore_initcall_sync(fn) module_init(fn)
115 #define arch_initcall(fn) module_init(fn)
116 #define subsys_initcall(fn) module_init(fn)
117 #define subsys_initcall_sync(fn) module_init(fn)
118 #define fs_initcall(fn) module_init(fn)
119 #define fs_initcall_sync(fn) module_init(fn)
120 #define rootfs_initcall(fn) module_init(fn)
121 #define device_initcall(fn) module_init(fn)
122 #define device_initcall_sync(fn) module_init(fn)
123 #define late_initcall(fn) module_init(fn)
124 #define late_initcall_sync(fn) module_init(fn)
126 #define console_initcall(fn) module_init(fn)
128 /* Each module must use one module_init(). */
129 #define module_init(initfn) \
130 static inline initcall_t __maybe_unused __inittest(void) \
132 int init_module(void) __copy(initfn) __attribute__((alias(#initfn)));
134 /* This is only required if you want to be unloadable. */
135 #define module_exit(exitfn) \
136 static inline exitcall_t __maybe_unused __exittest(void) \
138 void cleanup_module(void) __copy(exitfn) __attribute__((alias(#exitfn)));
142 /* This means "can be init if no module support, otherwise module load
144 #ifdef CONFIG_MODULES
145 #define __init_or_module
146 #define __initdata_or_module
147 #define __initconst_or_module
148 #define __INIT_OR_MODULE .text
149 #define __INITDATA_OR_MODULE .data
150 #define __INITRODATA_OR_MODULE .section ".rodata","a",%progbits
152 #define __init_or_module __init
153 #define __initdata_or_module __initdata
154 #define __initconst_or_module __initconst
155 #define __INIT_OR_MODULE __INIT
156 #define __INITDATA_OR_MODULE __INITDATA
157 #define __INITRODATA_OR_MODULE __INITRODATA
158 #endif /*CONFIG_MODULES*/
160 /* Generic info of form tag = "info" */
161 #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
163 /* For userspace: you can also call me... */
164 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
166 /* Soft module dependencies. See man modprobe.d for details.
167 * Example: MODULE_SOFTDEP("pre: module-foo module-bar post: module-baz")
169 #define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep)
172 * The following license idents are currently accepted as indicating free
175 * "GPL" [GNU Public License v2]
176 * "GPL v2" [GNU Public License v2]
177 * "GPL and additional rights" [GNU Public License v2 rights and more]
178 * "Dual BSD/GPL" [GNU Public License v2
179 * or BSD license choice]
180 * "Dual MIT/GPL" [GNU Public License v2
181 * or MIT license choice]
182 * "Dual MPL/GPL" [GNU Public License v2
183 * or Mozilla license choice]
185 * The following other idents are available
187 * "Proprietary" [Non free products]
189 * Both "GPL v2" and "GPL" (the latter also in dual licensed strings) are
190 * merely stating that the module is licensed under the GPL v2, but are not
191 * telling whether "GPL v2 only" or "GPL v2 or later". The reason why there
192 * are two variants is a historic and failed attempt to convey more
193 * information in the MODULE_LICENSE string. For module loading the
194 * "only/or later" distinction is completely irrelevant and does neither
195 * replace the proper license identifiers in the corresponding source file
196 * nor amends them in any way. The sole purpose is to make the
197 * 'Proprietary' flagging work and to refuse to bind symbols which are
198 * exported with EXPORT_SYMBOL_GPL when a non free module is loaded.
200 * In the same way "BSD" is not a clear license information. It merely
201 * states, that the module is licensed under one of the compatible BSD
202 * license variants. The detailed and correct license information is again
203 * to be found in the corresponding source files.
205 * There are dual licensed components, but when running with Linux it is the
206 * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
207 * is a GPL combined work.
209 * This exists for several reasons
210 * 1. So modinfo can show license info for users wanting to vet their setup
212 * 2. So the community can ignore bug reports including proprietary modules
213 * 3. So vendors can do likewise based on their own policies
215 #define MODULE_LICENSE(_license) MODULE_INFO(license, _license)
218 * Author(s), use "Name <email>" or just "Name", for multiple
219 * authors use multiple MODULE_AUTHOR() statements/lines.
221 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
223 /* What your module does. */
224 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
227 /* Creates an alias so file2alias.c can find device table. */
228 #define MODULE_DEVICE_TABLE(type, name) \
229 extern typeof(name) __mod_##type##__##name##_device_table \
230 __attribute__ ((unused, alias(__stringify(name))))
232 #define MODULE_DEVICE_TABLE(type, name)
235 /* Version of form [<epoch>:]<version>[-<extra-version>].
236 * Or for CVS/RCS ID version, everything but the number is stripped.
237 * <epoch>: A (small) unsigned integer which allows you to start versions
238 * anew. If not mentioned, it's zero. eg. "2:1.0" is after
241 * <version>: The <version> may contain only alphanumerics and the
242 * character `.'. Ordered by numeric sort for numeric parts,
243 * ascii sort for ascii parts (as per RPM or DEB algorithm).
245 * <extraversion>: Like <version>, but inserted for local
246 * customizations, eg "rh3" or "rusty1".
248 * Using this automatically adds a checksum of the .c files and the
249 * local headers in "srcversion".
252 #if defined(MODULE) || !defined(CONFIG_SYSFS)
253 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
255 #define MODULE_VERSION(_version) \
256 MODULE_INFO(version, _version); \
257 static struct module_version_attribute ___modver_attr = { \
263 .show = __modver_version_show, \
265 .module_name = KBUILD_MODNAME, \
266 .version = _version, \
268 static const struct module_version_attribute \
269 __used __attribute__ ((__section__ ("__modver"))) \
270 * __moduleparam_const __modver_attr = &___modver_attr
273 /* Optional firmware file (or files) needed by the module
274 * format is simply firmware file name. Multiple firmware
275 * files require multiple MODULE_FIRMWARE() specifiers */
276 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
278 struct notifier_block;
280 #ifdef CONFIG_MODULES
282 extern int modules_disabled; /* for sysctl */
283 /* Get/put a kernel symbol (calls must be symmetric) */
284 void *__symbol_get(const char *symbol);
285 void *__symbol_get_gpl(const char *symbol);
286 #define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x))))
288 /* modules using other modules: kdb wants to see this. */
290 struct list_head source_list;
291 struct list_head target_list;
292 struct module *source, *target;
296 MODULE_STATE_LIVE, /* Normal state. */
297 MODULE_STATE_COMING, /* Full formed, running module_init. */
298 MODULE_STATE_GOING, /* Going away. */
299 MODULE_STATE_UNFORMED, /* Still setting it up. */
302 struct mod_tree_node {
304 struct latch_tree_node node;
307 struct module_layout {
308 /* The actual code + data. */
312 /* The size of the executable code. */
313 unsigned int text_size;
314 /* Size of RO section of the module (text+rodata) */
315 unsigned int ro_size;
316 /* Size of RO after init section */
317 unsigned int ro_after_init_size;
319 #ifdef CONFIG_MODULES_TREE_LOOKUP
320 struct mod_tree_node mtn;
324 #ifdef CONFIG_MODULES_TREE_LOOKUP
325 /* Only touch one cacheline for common rbtree-for-core-layout case. */
326 #define __module_layout_align ____cacheline_aligned
328 #define __module_layout_align
331 struct mod_kallsyms {
333 unsigned int num_symtab;
338 #ifdef CONFIG_LIVEPATCH
348 enum module_state state;
350 /* Member of list of modules */
351 struct list_head list;
353 /* Unique handle for this module */
354 char name[MODULE_NAME_LEN];
357 struct module_kobject mkobj;
358 struct module_attribute *modinfo_attrs;
360 const char *srcversion;
361 struct kobject *holders_dir;
363 /* Exported symbols */
364 const struct kernel_symbol *syms;
366 unsigned int num_syms;
368 /* Kernel parameters. */
370 struct mutex param_lock;
372 struct kernel_param *kp;
375 /* GPL-only exported symbols. */
376 unsigned int num_gpl_syms;
377 const struct kernel_symbol *gpl_syms;
380 #ifdef CONFIG_UNUSED_SYMBOLS
381 /* unused exported symbols. */
382 const struct kernel_symbol *unused_syms;
383 const s32 *unused_crcs;
384 unsigned int num_unused_syms;
386 /* GPL-only, unused exported symbols. */
387 unsigned int num_unused_gpl_syms;
388 const struct kernel_symbol *unused_gpl_syms;
389 const s32 *unused_gpl_crcs;
392 #ifdef CONFIG_MODULE_SIG
393 /* Signature was verified. */
397 bool async_probe_requested;
399 /* symbols that will be GPL-only in the near future. */
400 const struct kernel_symbol *gpl_future_syms;
401 const s32 *gpl_future_crcs;
402 unsigned int num_gpl_future_syms;
404 /* Exception table */
405 unsigned int num_exentries;
406 struct exception_table_entry *extable;
408 /* Startup function. */
411 /* Core layout: rbtree is accessed frequently, so keep together. */
412 struct module_layout core_layout __module_layout_align;
413 struct module_layout init_layout;
415 /* Arch-specific module values */
416 struct mod_arch_specific arch;
418 unsigned long taints; /* same bits as kernel:taint_flags */
420 #ifdef CONFIG_GENERIC_BUG
421 /* Support for BUG */
423 struct list_head bug_list;
424 struct bug_entry *bug_table;
427 #ifdef CONFIG_KALLSYMS
428 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
429 struct mod_kallsyms *kallsyms;
430 struct mod_kallsyms core_kallsyms;
432 /* Section attributes */
433 struct module_sect_attrs *sect_attrs;
435 /* Notes attributes */
436 struct module_notes_attrs *notes_attrs;
439 /* The command line arguments (may be mangled). People like
440 keeping pointers to this stuff */
445 void __percpu *percpu;
446 unsigned int percpu_size;
449 #ifdef CONFIG_TRACEPOINTS
450 unsigned int num_tracepoints;
451 tracepoint_ptr_t *tracepoints_ptrs;
453 #ifdef CONFIG_BPF_EVENTS
454 unsigned int num_bpf_raw_events;
455 struct bpf_raw_event_map *bpf_raw_events;
457 #ifdef CONFIG_JUMP_LABEL
458 struct jump_entry *jump_entries;
459 unsigned int num_jump_entries;
461 #ifdef CONFIG_TRACING
462 unsigned int num_trace_bprintk_fmt;
463 const char **trace_bprintk_fmt_start;
465 #ifdef CONFIG_EVENT_TRACING
466 struct trace_event_call **trace_events;
467 unsigned int num_trace_events;
468 struct trace_eval_map **trace_evals;
469 unsigned int num_trace_evals;
471 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
472 unsigned int num_ftrace_callsites;
473 unsigned long *ftrace_callsites;
476 #ifdef CONFIG_LIVEPATCH
477 bool klp; /* Is this a livepatch module? */
480 /* Elf information */
481 struct klp_modinfo *klp_info;
484 #ifdef CONFIG_MODULE_UNLOAD
485 /* What modules depend on me? */
486 struct list_head source_list;
487 /* What modules do I depend on? */
488 struct list_head target_list;
490 /* Destruction function. */
496 #ifdef CONFIG_CONSTRUCTORS
497 /* Constructor functions. */
499 unsigned int num_ctors;
502 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
503 struct error_injection_entry *ei_funcs;
504 unsigned int num_ei_funcs;
506 } ____cacheline_aligned __randomize_layout;
507 #ifndef MODULE_ARCH_INIT
508 #define MODULE_ARCH_INIT {}
511 #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
512 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
514 return sym->st_value;
518 extern struct mutex module_mutex;
520 /* FIXME: It'd be nice to isolate modules during init, too, so they
521 aren't used before they (may) fail. But presently too much code
522 (IDE & SCSI) require entry into the module during init.*/
523 static inline bool module_is_live(struct module *mod)
525 return mod->state != MODULE_STATE_GOING;
528 struct module *__module_text_address(unsigned long addr);
529 struct module *__module_address(unsigned long addr);
530 bool is_module_address(unsigned long addr);
531 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
532 bool is_module_percpu_address(unsigned long addr);
533 bool is_module_text_address(unsigned long addr);
535 static inline bool within_module_core(unsigned long addr,
536 const struct module *mod)
538 return (unsigned long)mod->core_layout.base <= addr &&
539 addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
542 static inline bool within_module_init(unsigned long addr,
543 const struct module *mod)
545 return (unsigned long)mod->init_layout.base <= addr &&
546 addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
549 static inline bool within_module(unsigned long addr, const struct module *mod)
551 return within_module_init(addr, mod) || within_module_core(addr, mod);
554 /* Search for module by name: must hold module_mutex. */
555 struct module *find_module(const char *name);
558 const struct kernel_symbol *start, *stop;
569 * Search for an exported symbol by name.
571 * Must be called with module_mutex held or preemption disabled.
573 const struct kernel_symbol *find_symbol(const char *name,
574 struct module **owner,
580 * Walk the exported symbol table
582 * Must be called with module_mutex held or preemption disabled.
584 bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
585 struct module *owner,
586 void *data), void *data);
588 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
589 symnum out of range. */
590 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
591 char *name, char *module_name, int *exported);
593 /* Look for this name: can be of form module:name. */
594 unsigned long module_kallsyms_lookup_name(const char *name);
596 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
597 struct module *, unsigned long),
600 extern void __noreturn __module_put_and_exit(struct module *mod,
602 #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code)
604 #ifdef CONFIG_MODULE_UNLOAD
605 int module_refcount(struct module *mod);
606 void __symbol_put(const char *symbol);
607 #define symbol_put(x) __symbol_put(__stringify(x))
608 void symbol_put_addr(void *addr);
610 /* Sometimes we know we already have a refcount, and it's easier not
611 to handle the error case (which only happens with rmmod --wait). */
612 extern void __module_get(struct module *module);
614 /* This is the Right Way to get a module: if it fails, it's being removed,
615 * so pretend it's not there. */
616 extern bool try_module_get(struct module *module);
618 extern void module_put(struct module *module);
620 #else /*!CONFIG_MODULE_UNLOAD*/
621 static inline bool try_module_get(struct module *module)
623 return !module || module_is_live(module);
625 static inline void module_put(struct module *module)
628 static inline void __module_get(struct module *module)
631 #define symbol_put(x) do { } while (0)
632 #define symbol_put_addr(p) do { } while (0)
634 #endif /* CONFIG_MODULE_UNLOAD */
635 int ref_module(struct module *a, struct module *b);
637 /* This is a #define so the string doesn't get put in every .o file */
638 #define module_name(mod) \
640 struct module *__mod = (mod); \
641 __mod ? __mod->name : "kernel"; \
644 /* Dereference module function descriptor */
645 void *dereference_module_function_descriptor(struct module *mod, void *ptr);
647 /* For kallsyms to ask for address resolution. namebuf should be at
648 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
649 * found, otherwise NULL. */
650 const char *module_address_lookup(unsigned long addr,
651 unsigned long *symbolsize,
652 unsigned long *offset,
655 int lookup_module_symbol_name(unsigned long addr, char *symname);
656 int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
658 int register_module_notifier(struct notifier_block *nb);
659 int unregister_module_notifier(struct notifier_block *nb);
661 extern void print_modules(void);
663 static inline bool module_requested_async_probing(struct module *module)
665 return module && module->async_probe_requested;
668 #ifdef CONFIG_LIVEPATCH
669 static inline bool is_livepatch_module(struct module *mod)
673 #else /* !CONFIG_LIVEPATCH */
674 static inline bool is_livepatch_module(struct module *mod)
678 #endif /* CONFIG_LIVEPATCH */
680 bool is_module_sig_enforced(void);
681 void set_module_sig_enforced(void);
683 #else /* !CONFIG_MODULES... */
685 static inline struct module *__module_address(unsigned long addr)
690 static inline struct module *__module_text_address(unsigned long addr)
695 static inline bool is_module_address(unsigned long addr)
700 static inline bool is_module_percpu_address(unsigned long addr)
705 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
710 static inline bool is_module_text_address(unsigned long addr)
715 static inline bool within_module_core(unsigned long addr,
716 const struct module *mod)
721 static inline bool within_module_init(unsigned long addr,
722 const struct module *mod)
727 static inline bool within_module(unsigned long addr, const struct module *mod)
732 /* Get/put a kernel symbol (calls should be symmetric) */
733 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
734 #define symbol_put(x) do { } while (0)
735 #define symbol_put_addr(x) do { } while (0)
737 static inline void __module_get(struct module *module)
741 static inline bool try_module_get(struct module *module)
746 static inline void module_put(struct module *module)
750 #define module_name(mod) "kernel"
752 /* For kallsyms to ask for address resolution. NULL means not found. */
753 static inline const char *module_address_lookup(unsigned long addr,
754 unsigned long *symbolsize,
755 unsigned long *offset,
762 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
767 static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
772 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
773 char *type, char *name,
774 char *module_name, int *exported)
779 static inline unsigned long module_kallsyms_lookup_name(const char *name)
784 static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
792 static inline int register_module_notifier(struct notifier_block *nb)
794 /* no events will happen anyway, so this can always succeed */
798 static inline int unregister_module_notifier(struct notifier_block *nb)
803 #define module_put_and_exit(code) do_exit(code)
805 static inline void print_modules(void)
809 static inline bool module_requested_async_probing(struct module *module)
814 static inline bool is_module_sig_enforced(void)
819 static inline void set_module_sig_enforced(void)
823 /* Dereference module function descriptor */
825 void *dereference_module_function_descriptor(struct module *mod, void *ptr)
830 #endif /* CONFIG_MODULES */
833 extern struct kset *module_kset;
834 extern struct kobj_type module_ktype;
835 extern int module_sysfs_initialized;
836 #endif /* CONFIG_SYSFS */
838 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
840 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
842 #define __MODULE_STRING(x) __stringify(x)
844 #ifdef CONFIG_STRICT_MODULE_RWX
845 extern void set_all_modules_text_rw(void);
846 extern void set_all_modules_text_ro(void);
847 extern void module_enable_ro(const struct module *mod, bool after_init);
848 extern void module_disable_ro(const struct module *mod);
850 static inline void set_all_modules_text_rw(void) { }
851 static inline void set_all_modules_text_ro(void) { }
852 static inline void module_enable_ro(const struct module *mod, bool after_init) { }
853 static inline void module_disable_ro(const struct module *mod) { }
856 #ifdef CONFIG_GENERIC_BUG
857 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
859 void module_bug_cleanup(struct module *);
861 #else /* !CONFIG_GENERIC_BUG */
863 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
864 const Elf_Shdr *sechdrs,
868 static inline void module_bug_cleanup(struct module *mod) {}
869 #endif /* CONFIG_GENERIC_BUG */
871 #ifdef CONFIG_RETPOLINE
872 extern bool retpoline_module_ok(bool has_retpoline);
874 static inline bool retpoline_module_ok(bool has_retpoline)
880 #ifdef CONFIG_MODULE_SIG
881 static inline bool module_sig_ok(struct module *module)
883 return module->sig_ok;
885 #else /* !CONFIG_MODULE_SIG */
886 static inline bool module_sig_ok(struct module *module)
890 #endif /* CONFIG_MODULE_SIG */
892 #endif /* _LINUX_MODULE_H */